Volume 36 Issue 8
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ZHANG Zifan, HAN Yandong, WANG Weizhe, CAI Zhenwei. Interface failure analysis of thermal barrier coatings under CMAS penetration[J]. Journal of Aerospace Power, 2021, 36(8): 1702-1711. doi: 10.13224/j.cnki.jasp.20200374
Citation: ZHANG Zifan, HAN Yandong, WANG Weizhe, CAI Zhenwei. Interface failure analysis of thermal barrier coatings under CMAS penetration[J]. Journal of Aerospace Power, 2021, 36(8): 1702-1711. doi: 10.13224/j.cnki.jasp.20200374
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Interface failure analysis of thermal barrier coatings under CMAS penetration

doi: 10.13224/j.cnki.jasp.20200374

  • 1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

  • 2. Shanghai Branch China Petroleum Pipeline Engineering Corporation, Shanghai 200127, China

  • Received Date: 2020-09-05
  • Publish Date: 2021-08-28
    Abstract
  • Influences of different calcium, magnesium, aluminum, silicon and other oxides(CMAS) penetration depths under the influences of temperature gradients and the influences of the interface roughness on the interface temperature distribution under CMAS penetration were considered based on the influences of penetration on the properties of the ceramic layer of the thermal barrier coating(TC). The influences of thermally growth oxide(TGO) thickness and interfacial stress behavior were also studied. The results showed that the penetration of CMAS increased the thermal conductivity of the ceramic layer, which further increased the interface tem-perature, the thickness of TGO, and also made the stress state of the interface more serious. The increase of the interface roughness led to an increase in the temperature difference between the peaks and valleys of the interface, the uneven growth of the interface TGO, and finally caused the change of the stress distribution of the interface.

     

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